Eddie Motorsports LS Chevy S-Drive pulley systems are the most compact and complete serpentine kits on the market. They are also the easiest to install. Change the appearance & performance of your engine with a single six or eight rib tensioner and serpentine belt to drive all of your accessories. Our drive system’s brackets and pulleys are precision CNC machined from high quality aluminum. LS Chevy S-Drive pulley system’s also include all of the necessary stainless steel fasteners as well as the highest quality, name-brand components including Tuff Stuff water pumps, Powermaster alternators, Gates tensioner and serpentine belts, and Maval power steering pumps. S-Drive kits are available in raw machined or highly polished finish as well as a variety of anodized or Fusioncoat colors.